Quenching machine



INVENTORS.

Nov. 22, 1949 F. M. 'rlMM ET AL QUENCHING MACHINE Filed March 25, l19432 Sheets-Sheet l Nov. 22, 1949 F. M. TIMM ErAl.

QUENCHING MACHINE Filed March 25, 1943 2 Sheets-Sheet 2 n! INVENTORS.@gm/f 7%. @fawn 05er @M Patented Nov. 22, 1949 QUENCHING MACHINE FrankM. Timm, Munster, Ind., and Robert D.

Gibney, Calumet City, Ill., assignors to American Steel Foundries,Chicago, Ill., a corporation of New Jersey Application March 25, 1945,Serial No. 480,508

4 Claims.

Our invention relates to a device for quenching springs and moreparticularly to such a device by which a plurality of volute coil springmay be simultaneously quenched. l

An object of our invention is to provide means for effecting turbulenceof the quenching liquid.

A specific object of our invention is to design quenching apparatuscomprising a receptacle filled with any suitable quenching liquid suchas oil and a header pipe suspended therein, said pipe being providedwith a plurality of ports therein, and spring seats disposed aroundrespective ports, extensions being formed on said pipe at opposite sidesthereof and disposed in alternate relationship with the spring seats,each of said extensions being provided with a plurality of ports, andadditional liquid being pumped through the header pipe and through saidports to effect turbulence of the liquid within the receptacle.

A further object of our invention is to quench volute coil springs byimmersing the same in a quenching liquid and pumping additional liquidtherethrough while at the same time pumping additional liquid againstthe external surfaces of said springs.

In the drawings, Figure l is a side elevation of our novel quenchingvapparatus with portions of the liquid receptacle being shown in sectionto clarify the view, and Figure 2 is a top plan View of the structureshown in Figure 1.

Figure 3 is a sectional view taken in the vertical plane indicated bytheline 3--3 of Figure 1, and Figure 4 is a fragmentary elevational Viewshowing in detail the construction of the header pipe illustrated inFigures 1 to 3 inclusive; and

Figure 5 is a fragmentary view comparable to that of Figure 1 butshowing a modification of our novel quenching apparatus.

In each of said figures certain details may be omitted where moreclearly seen in other views.

Describing our invention in detail, an oil receptacle or tank 2 isfilled with oil or other suitable quenching liquid designated 4.Suspended within the receptacle 2 is a header pipe 6 afforded connectionat one end thereof by an elbow to a supply line Ill which is connectedto a source of liquid such as a supply pump (not shown) The opposite endof the pipe E is closed and is provided with an arm I2 engaged as at I4with the top of the tank 2 to afford convenient support for the pipe 6.s

A plurality of ports I6, I6 are formed in the top of the header pipe B,and a spring seat I8 is mounted around each port. On opposite sides ofthe header pipe 6 are formed a plurality of up- Wardly projectingextension tubes 20, 20, said tubes communicating with the pipe 6 andbeing closed at their lupper ends, and said tubes being formed with aplurality of ports or openings 22, 22 on the sides thereof adjacent theseats I8, I8. It may be noted that the tubes 20, 20 on each side 1of theheader pipe 6 are alternately arranged with respect to the seats I8, I8,and the portions of the tubes above the level thereof are spaced fromeach other at a distance greater than the diameter of said seats inorder to permit passage of a spring between the tubes in either avertical or a horizontal direction, as may be clearly seen from acomparison of Figures 1 and 2.

Beneath the header pipe 6 is a conveyor comprising a conveyor belt 28 ofconventionaly form and mounted on a wheel and axle assembly 3U, saidbelt being rotated in a counter-clockwise direction, as indicated by thearrow in Figure 3, by any convenient power means (not shown), saidconveyor serving a purpose hereinafter more fully described.

The receptacle or tank 2 is provided with an overflow outlet 32connected to any convenient means, such as a pump (not shown), forremoving overflow liquid from said receptacle, and the outlet 32 isprovided with a strainer 34.

In operation of our novel quenching apparatus,

a heated volute spring 3G (Figures 1 and 3) is ignated 38 to a positionon one of the seats I8, I8

and above the associated port I6 in the header pipe, and thereafteradditional quenchingfliquid is forced or pumped into the header pipe 5at an adequate rate to cause the liquid to be urged upwardly through theinterior of the spring from the port I5 and against the exterior of thespring from the ports 22, 22 in the adjacent extension tubes 20, 20. Inthis manner a turbulence is created in the quenching liquid whichprovides adequate quenching of both the inner and outer surfaces of thecoils of the spring. The liquid is prevented from overflowing thereceptacle 2 by pumping liquid from the overflow pipe 32 atapproximatelythe same rate asliquid is pumped into the header pipe 6. In thisconnection, it may be noted that a rate of eight hundred gallons perminute has produced vvery satisfactory results in actual practice.

After a predetermined period of time, th

spring may be moved in a horizontal direction from the seat I8 betweenthe adjacent tubes 20, 2! and said spring may then be dropped on theconveyor belt 28, a baille 4l) being being provided to prevent thespring from falling behind the end of the conveyor, and it will beunderstood by It will be understood that; if desired: four;

springs may.` bef. quenched at theasameV time' in. the arrangementshown, although the header pipe 6 may be constructed to quench anydesirediz number of springs at the same time.

A modication of our novel quenching' appa'- ratus is shown in Figurewherein; thefreceptacle |82 may be filled with: ai quenchingiiquid` |04,and a header pipe |06' may-"be suspended within said liquid, said pipebeing provided with ports |88, |88 and spring seats I IIJ, III) mountedtherearound. On each spring seat is a cone member II2 adapted to projectwithin the-assoI ciated spring when the same is positioned upon the;seatH0, said cone member: being'provided with a. plurality of openings; |I.4|:I 4 through which additionalliquid maybezforcedlby meansV offztheaport I 88 against. the; internal; surfaces: offV ther associatedspring;` One-Y each' sidev of; the headerv pipe I |16V andI arrangedalternatinglywith theispringsseats` I'I, |:|.0', are a plurality of ex'-tension tubes H6, I I6 serving thek same purposes asfthe correspondingtubes 20, 2010i theprevious: modification.y modification of." ourinvention shown in Figure 5.' is substantially identical with thatdisclosed in: Figures 1 to 4 inclusive exceptv for the provision ofthecone member II'2, saidl cone member serving as a means of' creatingturbulencel in the.i quenching: liquid which is urged through the= ports|08, |88 ofthe header pipe'- |06..

It will also be understood'that.although-.a conveyor mechanism is notshownl inLFigure 5, such: af mechanism may readily be.y utilized as` inthe modification shown in Figures 1 to 3.

It is to be understood thatwe'do not'4 wish. to be limited bytheeexactembodimentsof thefdevice shown which are merely byway.'r ofv illusLtration and not limitation as variousl and other forms of the devicewill, of"cours :-;l be' apparent" t-o those skilled' in the -artwithoutY departingffrom the spirit'of the" invention orthefscopeoffthe'l claims.

We'claim':

1'. A device for quenchingAw coil springs com.-A prising a receptacleadapted' tov beY filled' with liquid, a headerpipe suspended-therein,saidpipef beingclosed` at'one end thereof, an outlet inl the'y t'opofsaid pipe, a spring seat mounted onA said pipe aroundsaid'outlet, aplurality of extensionl tubes projecting upwardly from said pipeandspaced about said'seat, said tubes communicating with said pipe andbeing closed at theirendsf remote therefrom, openings inl eachlextension tube on the side thereof adjacent said'seat, said4 pipebeingadaptedto convey said liquidunder` pressure, and'm'eans' for conveyingoverflowliqeuidfrom said receptacle, the ltubesl on each-iside? of' thepipey being'spaced a dista1'1ce1from.eachv other greaterv thanthediameter of saidA seat; whereby an associated spring mounted' on"said-, seat may be moved laterally of said'pipe'betvveen`- theA tub-esaty either side thereof and: may be dropped toward the bottom of' saidreceptacle.

2. Ina' device for quenching-volute coil springs;`

Itv will be understood that the a receptacle for containing a fluidquenching medium, a substantially horizontal header pipe suspendedtherein and comprising a plurality of ports in the top thereof, a springseat on said header pipe around each port, spaced upstanding extensiontubes on each side of said pipe alternate-ly arranged with. said;seats,K ports in saidz. tubes: on thelfzsidesv thereof' adjacent saidseats, said pipe being adapted to convey said I: medium under pressureto said receptacle, and

meansior. conveying overflow medium from' said receptacle, the spacebetween the tubes on each side'fofsaidypipe beingggreater than thediameter oflsaidiseat'siwhereby associated springs mountedonsaidseats1may=be=removed therefrom laterally of said pipe between theassociated tubes and dropped in said receptacle.

3. In a device for quenching hollow members, a receptacle adapted tocontain a fluid quenching medium, a conduit in said receptacle adaptedto convey. said :mediumaand comprising a.; port, substantiallyhorizontal seat meansf-around.saidy port; for supporting a member` tubequenched, -and exa tension tubes upstanding; from saidv conduitz aroundsaid: seat means; said tubesl comprising ports r in theirsides adjacentfsaid se'atvrneans andi beingrarranged` sopthaty alpairotubesfis5disposed aty each side of said conduit, the-distancebetween:A thetubes of each pairz;being1.greater thanthe widthof saidseati means wherebysaidgmember may be removed therefrom' laterallyfofisaid con@ duit between theA associated pairlv of." tubes? and? maybedroppdin saidrecepta'cle'.

4; In a device for.y quenching?hollowi'members;4

ing medium, a conduit in: said,-:receptaclei` adaptedf toconvey saidmedium'4 and comprising a: port,v substantially horizontal?v seat means;aroundsaidi port forv supporting a member. to be quenched,A and aVplurality' of extension tubes" upstanding from said conduit around"said' seat'means; saidi tubes comprising ports in theirfsides adiacentisaid seat means; thef distance@ between'. the tubes atA eacliside-ofthezconduit' beingf greater than-1 the width of said seat meanswherebyfsaid'mem'-N ber mayy be" removed therefronr laterally off saidconduit between theassociated"tubes' andi may be dropped insaid"receptacle:-

FRANK.' TIMM.

ROBERT D. GIBNEY.`

REFERENCESl CITED The followingVA references: are of'frecord.' in'. the;le of' this patent:

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